(19)
(11) EP 0 092 771 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.08.1984 Bulletin 1984/31

(43) Date of publication A2:
02.11.1983 Bulletin 1983/44

(21) Application number: 83103784

(22) Date of filing: 19.04.1983
(84) Designated Contracting States:
CH DE FR GB IT LI NL SE

(30) Priority: 23.04.1982 JP 6743082

(71) Applicant: HITACHI, LTD.
 ()

(72) Inventors:
  • Shimizu, Norio
     ()
  • Ueno, Masao
     ()
  • Odawara, Yoji
     ()
  • Sumitani, Tomoaki
     ()
  • Fujimoto, Masakatsu
     ()
  • Fujiwara, Kiyoshi
     ()

   


(54) Process and apparatus for culture of microorganisms using oxygen-enriched gas


(57) he culture of microorganisms with oxygen-enriched gas comprising the control of the dissolved oxygen and dissolved carbon dioxide concentrations in a culture liquor to the respective target concentrations by controlling the oxygen partial pressure of an oxygen-enriched gas prepared by the adsorption of nitrogen from air. and also controlling the carbon dioxide partial pressure of the air phase in the fermenter. High yield of product can be attained thereby.






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